Metallurgical furnace.



N 879 483. PATENTED FEB. 18, 1908.

o P. MEYER. I

METALLURGICAL FURNAGE. APPLICATION FILED JAN.13. 1906. RENEWED JAN. 11, 1908.

6 SHBBTS SHEET 1.

No. 879,483. PATENTED FEB. 18, 1908. P. MEYER.

METALLURGICAL FURNACE, urmounm FILED n11. 1a. 1900. nmwnwnn JAN. 11, 1008.

6 BHEBTS8HEET Z.

No. 879,483.. 4 PATENTED FER-18,1908.

. F. MEYER.

METALLURGICAL FURNACE, APPLIOATI ON FILED JAN. 13. 1906.- BEBE-WED IA]. 11,-190'8.

. 6 SHEETS-BEEET 4, W2 72 No. 879 483. PATENTED FR. 18 1908. v F. MEYER. h

METALLURGICAL FURNACE.

APPLICATION FILED JAN.13, 1906. RENEWED JAN. 11, 1908.

6 SHEETS-SHEET 5.

N.879 i83. U PATENTED PEB.18 1908.

0 ,RMBYBR.

' METALLURGIGAL FURNAGE. I APPLIUATION FILED JAN. 13, 1906. RENEWED JAN. 11, 1908.

6 BHEETSSHBET 6.

. FRANZ MEYER, OF ENGLEWOOD,

or AMERICA, .OF NEW YORK, N. Y.

To all whom it may concern:

hie, in

, ashthrough it conrbustion mg a 4 ing material, or 0th like. -densers,

, UnrTEnsrar-s NEW JERSEY, ASSIGNOR TO METALLURGICAL GOMPANY ,-A CORPORATION OF NEW JERSEY.

METALLURGICAL scanners Be it known that I, FRANZ MEYER, a subect of the Emperor of Germany, residin at nglewood, county of Bergen, State of e'w Jersey, have invented certain new and useful 1m rovements' in Metallurgical Furnaces; and I do hereb declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful ,im rovements in metallurgical furnaces, an is designed to realize a construction wherein a continuous operation is feasimain stack containing the furnace c arge by the lifting effect of new portionsof the charge fed into the stack at its lower portion by screw conveyers or the like. The construction is'especially adaptedfor t e recovery of such metals as are volatile at the tern eratureat which they arereduced from t ieir area, as, for instance, zinc.

' IOther characteristic features of my invention consists: 1.-In providing-en auxiliary stack, or chamber for the reception of the horn the main stack,-and waste heat of said ash, by passing up the air intended for sustaining in the Inain stack. YIdlBg a'third stack or chamber the for the re ception of fuel when it is desired to add a siet in raising the temperature of t in the main as to ase charge stack, 'or.to render the storiesphere thereinanore reducin 3. 1n provid- 'ssion ports at the top ofthe furnace, ,t'o'r theadmission of fuel generally, or of fluxer, i e-agents if it is revary the conditions preume of prcr ucer gas or similar quiredto control or ve ling-inthe furnace, these, ports also servm forthe inse'rtion .of etching tools or the e. iiifprovi-ding a condenser or conlocated. at the lower partof the furinace, into which the volatile roducts of corn- Ji l bastion andre'actionpass, t ese condensers bemgpreterably contained in chambers or compartments in which the products l com- 13311851011 circulate after leaving the condensers and before passing on to the chimney stack or'stacks, .nlters or bag rooms. The connsed metal .is thus maintained in a liquid Specification of Letters Patent. Application filed January 13. 1906. Serial lilo. 295-929- Renowcd Jonuery 11 the sense that the spent ore or ash is j'progressively forced ,out at the top of the recuperating 2. In pro- I condition, appropriate to it" collection and erio 'c removal.

Ot or minor of novelty will also he hereinafter descr'bed.

ln'the accompanying drawings. 1 represents an elevation of role ,ullur ieal V furnace embodying one form J modification of my invention. Fig. :2 repres n cal sectional view thereof, on the line 52-2 of Fig. 3. Fig. 3 represents a vertica sectional view, on the line 33 of Fig. 2. 41g. 4 re resents a horizontal sectional view, on t e line li of Fig. 3. Fig. 5 represents a vertical sectional vie. of another form or modi fioation of my invention: and firemesents a horizontal sectional view thereof on the line 66 of Fi Figs. 7 a 8 spresent like views 0' another modification. Figs. 9 6% 10 represent like views of a s ill further modification.

inu'lar letters of reference ndicate similar parts throughout the several views.

eferring first to the construction shown inFigs. 1 to 4 inclusive, A indicates the main stack for the reception of the mixture of ore or like inetahhearing material containing the metal to be reduced or volatnized in the furnaoe, together with the fuel, ii ingredients desirable for lurgical c ieration ha .1 .:is in supplied y hopper E to a no conveyor, which may souvenir of a feed screw c, cpere ng which latter comzninuc portion of the-stack. it will be desirable to supp zontally: acting screw .c, vertically acting screw 5, as shown, in croer to diminish any tendency to clogging. The main stack A is separ I tion well 0 from an auxili y s .i com I pertinent D, which receive the spent ore time to time.

protecting can .nt the horistack is located the airalsocontain a pipe 8, for

. of the furnace charge. These ports m may also serve for the Insertion of suitable stokmg tools for working or stirring the charge in the main stack or the cinders in the ash stack, to prevent or break up any crusts that may form or tend to form therein.

The volatile productsof combustion pass downwardly through the main stack and take their exit through a series of lateral apertures 7t therein, this down-draft being induced by the chimney stacks or exhaust pi es E, or by forcing air or gas through the a mission pipes c and s, or by both of said expedients. From the apertures it, they ente'r the condensers F, through the inclined passage ways it, and the condensible metal present (as, for instance, zinc) willcollect in the condensers,'which I have here shown of the familiar type used in the metallurgy of .zinc. In order that the condensed metal may remain in agliquid or molten statein the condensers, so that itmaybe readily drawn out, at intervals, as it collects, I

- locate the condensers in surrounding chambers G. The volatile products of combustion including all the non-condensed products of reaction issuing from the open ends of the condensers, on their way to the chimneys or exhaust ipes F7,will occupy these chambers G, there )y maintaining the requisite temperature therein, which will be above the melting point of the condensed zinc or. other like metal. To withdraw the metal from the condensers, the lire-clay plugs z, 7', are temporarily removed, the usual hoe-like scraper is insertedfinto the condenser and the metal is drawn out through the open mouth of the condenser and is caught me hand ladle, or the like, as it falls through the aperture from which the plu r has been removed. One of these hamlhladles or collectors is shown at {I in Fig. 7. Fire-clay plugs k, k, are likewise provided, so that, when temporarily removed, a suitable bar or tool may be inserted to keep the aperture h open beyond the plug A". be understood that, after the temporary re- .moval of these several plugs, they are replaced by new plugs, likewise of lireclay.

In the form or modification of the furnace shown in Figs. 5 and 6, A. indicates the main stack, 1) the ash stack, and the supply conduit for the ore charge, in which conduit .l have indicated, as an inferior substitute for a conveyer screw, the familiar forwardly-fecding stirrer (1 employedin pug mills. -The ash stack l) is provided with the air-admission pipes cf, sup'ilied from the bustle-pipe H, and additional branches c'-, supply. the stack J, as shown. The stack J is adapted to receive a supply of solid fuel,

throu h one of the charging inlets m, and is intent ed foruse as a gas producer, its gaseous )roducts meeting the it will, of course,

' haust pipes E.

re-heated air.

passing downwardly with said airinto'the main stack. The gas generated in the producer will ordinarily consist of the usual Siemns or producer gas, but may, in some instances, contain a quantity of water gas which may be generated by admitting a suitable amount of steam into the heated fuel.- The upper portion of the main stack is inclined, as shown, so that as the spent charge or ash rises, it will be discharged over into the ash shaft, instead of into the shaft J. Suitable provision ismade at the base offthe shafts D and J, forthe removal of ash, and it will,of course, be understood that the structural and functional relation of the apertures 71, to the condensers F, and th ir containing chambers G is the same as in t e form of furnaces shown'in Figs. Lto 4.

The form or modification shown in Figs. 7 and 8, is of general 'circular contour, the main stack A rismicntrir'llywithin a surrounding annular as stack D, so that as the ashes or cinders issue fronrthe top of the main stack, they stack. T e annular ash stack has a series of are equally distributed in the asli air admission pipes e ,.-supplied from the bust'le pipe H, and the pro ecting chambers G contain the condensers .F, having the chirpneys" or exhaust pi es E, as in the modifica tions before descri ed. y

In Figs. 9 and 10, have illustrated the fea: ture (applicable as well to the other modifications of my furnace) of rovidingmore than one supply conduit C stack A thereby proportionate] increasing the rate of supply, and, especia ly, dividin up the.power requ1red for effecting the feet among the several conveyers a co'ntained'in said conduits. The feed may be further as sisted, if desired, by arranging in the lower part of the main stack, a vertical conveyer (one or several) as before. I prefer this arrangement for feeding a shaft of large diame* ter. v The general form of the furnace illustrated in Figs. 9 and is likewise circular, with the projecting chambers G'-, containing e condensers F and having the chimney or ex llcre, also, the main 'shaftA rises centrally within the outer annular walls of the furnace but a dividing wall a (SlllOWIl in dotted lines Fig. 7) se )arates the intervening space into an ash staclc or chamber D'-, and a gas producer stuck or. chamber J, u )plied res )ectivcly with air from the bustle pipe H, and valvedbranches c, c. On the sidev adjacent to the aslrshaft or chamber l.)-, the upper portion of the wall of the main stack A is stepped (or inclined, if preferred) so as to direct the ash into D instead of into J..

Having thus described my invention, what I claim is:

for the main 1. A metallurgimil furnace, having a stack for the reception of the furnace charge, means 65 Whic ascends through the as i stack D and l for effecting, internal combustion within said for the ehsrge end means for feeding furna ie charge, so ining the ore or like materiel tobe treated, progressively upward through l l *ubstsntlsllly as described.-

u-rnucc, heving 2. stock -eiurnuce charge, means ccn'ibustion within said rge supply conduit corn-- e of the stack, and e eding the charge progressively conduit and upwardly substantially as de for ece, having a stack 11 of tllflnlfiliwij charge, means stion Within said echer e supply conduit com-- it the base of the stack, and a feeding the charge progressively the su ely conduit and upward 1S steer, said conveyer consisting loos-ted at the lower part of s; substantially as described.

on of the furnace charge, menu's charge, means for feeding the furnsce char e, contemmg the ore or like material to. e treated, r ogressively upward through said charge is scribed. v i

5. A metellurglcsl iurnace, hsvlug en in- .ternelly heated main stack, means for feedmg the it: uses charge, containing theore or like materiel to be treated, progressively upward tb ough said stuck, and an ssh stack into a l? thespent charge is discharged, said steelbeing provided with an airinlet at its lower port-i011, so that the air will be predicated as it rises through the ssh stack prior to its entry nito the main stuck; substentielly described.

6. A metallurgical furnace, having an 1n- I ruelly heated rerun stack, means for iecdmg mice charge, containing the ore or like -,""l to treated, progressively up- Jugh said stuck, sndun ssh stack the spent charge is discharged, stock being provided with s ges-inits lower portion substautislly as glescribed.

7. A "Wllurgicel furnace, having an internally heated main stuck,'meens for feeding the furnace charge, containing the ore or i to be treated, progressively up-' like met 3 ward tb 2gb said stuck, an ash stack into mam stsclr discharges at the upper part cl the furnace, and su ply ports also lbe upper part of t is furnace for the if desired, of reducing material or -e like, to vary or regulate the conditions prevailing in the furnace; substantially as described. I

A metallurgical furnace having an Inrgicel furnace, having a stack n ssh stack mto which the spent discharged substantially as delike material to be treete ternslly sen mainstack, means for feedlike material to be treated, progressively up- Wsrd through said stack, on ash stack into which the spent chsrge'is'dischsrged', end an auxiliary fuel-receiving combustion stuck or chamber'communiceting with the u per portion of the main. stack; substantially as described. i.

9. A metallurgical furnace, having an internally heated chamber, meens for feeding ving thefui'nuce charge, containing the ore or the furnace charge, containing the ore or like of combustion and reaction pass as t ev issue from the stack; substantially? as descri ed.

11. A. metallurgical furnace, havin an intcrnally heated stack, means for fee g the furnace-charge,,containing the 'oro or like material to be treated, progressively upward through the stack, means for inducing ,a

down draft throughthe stack, a. condenser connected with the stack at its lower portion into whih the volatile'pr'oducts of combustion and reaction pass as they issue from the stack, ande heating chamber surround the condenser to maintain the condens d metal in a liquid condition; substantially as described.-

12. A metallurgical furnace, having an internally heated main stack, means for feeding'tlie furnace charge, c ntaining the ore or ii, progressively up ward through said stack, and an ash stuck into which the spent charge is discharged; said ash stock being separatedhom the main shaft by described.

13. A metallurgical furnace, having an internally heated main stack means for feeding the furnace charge, containing thc ore or like material to betreeted, brogressively up word through the stack, and an ash stuck into which the main stack discharges, the main stack being so shaped at its upper end .as to direct the spent charge into the ash shaft substantially as described.

14. A metallurgical furnace, having an internally heated main stack, means for feeding the furnace charge, containing the ore or like material to be treated, progressively upward through said stack, an ash stack into which the spent charge is discharged, and-an auxiliary fuel-receiving combustion stack,

said ash stack and fuel-receiving combustion an'annular wall; substsnticlly as stack being se' arated from the main shaft by v an annular wa l substantially as described.

. 15. A metallurgical furnace, having an in ternally heated stack, and means for feeding the furnace charge, containing the ore or other material to be treated, progressively u ward through the stack, said means inc uding a plurality of lateral sup ly conduits, each having a conveyer and all with the lower portion of the stack; substantially as described.

16. A metallurgical furnace, having an internally heated main stack, means for feeding the furnace charge, containing the ore or connecting like material, an ash stack receiving the spent charge from the main stack, means for causing a down draft through the main stack, a plurality of outlet ports in the main stack through which the volatile products of com-' bustion and reaction issue and a condenser connected to each of said ports; substantially as described,

In testimony whereof I affix my signature 

